單項選擇題A customer wants to create a 1:1 protection group with a DS3N-12 card. Which card slots would allow for a 1:1 protection?()

A. Slot 2 and Slot 4
B. Slot 4 and Slot 6
C. Slots 5 or 13 only
D. Slot 16 and Slot 17


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3.單項選擇題What is the correct relative switching priority in a BLSR ring (higher to lower)?()

A. signal fail, signal degrade, manual switch
B. signal degrade, signal fail, manual switch
C. protection lockout, manual switch, path AIS
D. forced switch, manual switch, signal degrade
E. protection lockout, manual switch, forced switch

4.單項選擇題Why is an OC-3 2F-BLSR not feasible?()

A. Switch times would exceed 50 ms for an OC-3 BLSR ring.
B. An equal amount of working and protect bandwidth is required.
C. DCC bandwidth is not large enough to handle K1/K2 processing.
D. There is not enough bandwidth in an OC-3 ring to justify BLSR protection.

5.多項選擇題What are two characteristics of dual-ring interconnect in SONET networks? ()(Choose two.)

A. It protects signals against node failures between rings.
B. It protects signals against node failure within a single ring.
C. It allows for traffic to be preempted when a ring switch occurs.
D. Traffic can be dropped and continued at interconnecting nodes.
E. It protects preemptible traffic from being dropped when a ring switch occurs.

最新試題

What is an advantage of an externally modulated laser over a directly modulated laser?()

題型:單項選擇題

How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?()

題型:單項選擇題

Click the Exhibit button. Which type of multiplexer is shown in the exhibit?()

題型:單項選擇題

What are three relevant design considerations when using the 15216 EDFA? ()(Choose three.)

題型:多項選擇題

Click the Exhibit button. What is the maximum allowable loss budget between the ONS 15216 Mux (left side) composite output and the ONS 15216 Demux (right side) composite input, with the optical values given in the exhibit? ()(Assume the worst case loss of 4.5 dB for 15216 200 GHz Mux/Demux and ignore power penalties or extra margin.)

題型:單項選擇題

In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?()

題型:單項選擇題

A 2.5 Gb/s (OC-48 or STM-16) optical signal with a dispersion tolerance of 1200 ps/nm goes through fiber with 18ps/nm*km of dispersion. How many 15216-DCU-350 equivalents are needed for enough compensation after traveling 100 km?()

題型:單項選擇題

If the power is 0 dBm, what is the power in mW?()

題型:單項選擇題

Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?()

題型:單項選擇題

Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?()

題型:單項選擇題